28 Results

The Sydney Coordinated Adaptive Traffic System (SCATS) is used to mitigate traffic congestion along urban arterial corridors. Although there has been research on SCATS’ performance, this report combines three different areas of research about SCATS ...
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Principal Investigator: David Hurwitz

In some jurisdictions, protected left-turn phasing has been replaced with the flashing yellow arrow (FYA) for protected/permissive left turns (PPLTs) to reduce delay. However, it is important to have a thorough understanding of the conflict between p ...
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There is a growing interest in arterial system management due to the increasing amount of travel on arterials and a growing emphasis on multimodal transportation. The benefits of archiving arterial-related data are numerous. This research report desc ...
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This report describes analysis undertaken to establish a method for incorporating traffic operations and ITS strategies into the GreenSTEP model. We first discuss operations impacts on fuel economy and delay from the literature. Then, an investigatio ...
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The Sydney Coordinated Adaptive Traffic System (SCATS) is used to mitigate traffic congestion along urban arterial corridors. Although there
has been research on SCATS’ performance, this report combines three different areas of research about SCAT ...
Read More

Co-Investigator: David Levinson

Travel-time variability is a noteworthy factor in network performance. It measures the temporal uncertainty experienced by users in their movement between any two nodes in a network. The importance of the time variance depends on the penalties incurr ...
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Co-Investigators: David Levinson, Kathleen Harder

The issue of travel time reliability is becoming more critical for the movement of people and freight. In order to examine issues related to the value of travel time reliability, we plan to test drivers' preferences for alternate commuter r ...
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Co-Investigators: Mecit Cetin, Andrew Nichols

Vehicle re-identification methods can be used to anonymously match vehicles crossing two different locations based on vehicle attribute data. This research builds upon a previous study and investigates different methods for solving the re-identificat ...
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Principal Investigator: John Gliebe

DEVELOPMENT AND SENSITIVITY TESTING OF ALTERNATIVE MOBILITY METRICS: The Oregon Highway Plan’s (OHP) mobility policies guide various planning and programming activities of the Oregon Department of Transportation (ODOT). Among these activities are O ...
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The objective of this project is to build on an existing data archive platform, known as the Portland Oregon Regional Transportation Archive Listing (PORTAL) toward development of next generation performance measurement and congestion reduction tools ...
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Real-time knowledge of system performance enables transportation agencies to manage traffic conditions and keep the public informed of periods of congestion. The ability to accurately measure arterial performance has been limited primarily by the ava ...
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A new methodology and algorithms were developed to combine diverse data sources and to estimate the impacts of recurrent and non-recurrent congestion on freight movements’ reliability and delays, costs, and emissions. The results suggest that tradi ...
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